A good set of notes for end users, which would work well in a corporate awareness programme: https://www.us-cert.gov/ncas/tips/ST15-003
I recently undertook this certification. Long overdue, I had an opportunity to pursue CEH over a decade ago, but opted to take the Red Hat Certified Engineer (RHCE) Standard Track at the time. How did it go?
NMAP has some useful active fingerprinting capabilities, sending a variety of packets and carrying out evaluation of virtually every packet bit. It is a great help if you have nothing more than an IP address to go on, and need to quickly narrow down the platform type (e.g. using nmap -O -sV ).
Here’s a summary of my advice on LinkedIn regarding the Dot EU domain and Brexit.
In this post I wanted to explore some of the lesser used features of iptables, and showing how iptables can be combined with a dual-homed Linux server to act as a data rate control. This is a cheap alternative to using a dedicated firewall.